Home / 1,208.35-1,811.27-550.68

Finding the Fourth Proportional to 1,208.35, 1,811.27 and 550.68

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Solution

The fourth proportional to 1,208.35, 1,811.27 and 550.68 is: 825.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208.35 : 1,811.27 = 550.68 : x
  2. Step 2: Convert to fraction form
    1,208.35/1,811.27 = 550.68/x
  3. Step 3: Cross multiply
    1,208.35x = 1,811.27 × 550.68
  4. Step 4: Simplify right side
    1,208.35x = 997,430.16
  5. Step 5: Solve for x
    x = 997,430.16/1,208.35
  6. Step 6: Final answer
    x = 825.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.